All of the ATMs were in places easily accessible to the public, and the thefts took place in the late evening or early-morning hours, according to a business alert issued by the Belmont District Detective Division tonight.

The first theft in the series took place on July 16, and the latest was "quite recently," with the latest report still preliminary, according to a spokesman at Police News Affairs.

The four thefts being investigated as possibly connected took place at locations on the 200 block of West Adams Street, near State Street and Adams Street, on the 300 block of South Michigan Avenue, and on North Michigan Avenue north of Madison Street, police said.

Video surveillance cameras captured the possible suspects hovering around one of the ATMs at the approximate time of the theft. The images also show the red pickup truck in which the men arrived, according to police.

Details on which theft the video images came from was not released.

According to the business alert, the first suspect is described as a white man, 30-40, 270 pounds, bald, with a fair complexion. The second suspect is described as a white man, 30-40, 230 pounds, brown hair, with a fair complexion.

Anyone with information is asked to call Belmont Area detectives at 312-744-8261 or 312-744-8263, or Central District police at 312-745-4290.